An elderly Yao woman wearing her traditional clothing sews outside her home in Ban Nammy, Luang Namtha province, Lao PDR. One of the most ethnically diverse countries in Southeast Asia, Laos has 49 officially recognised ethnic groups although there are many more self-identified and sub groups. These groups are distinguished by their own customs, beliefs and rituals. Details down to the embroidery on a shirt, the colour of the trim and the type of skirt all help signify the wearer's ethnic and clan affiliations.